It's bound to happen during breaking news, but it's also kind of a bummer. MSNBC accidentally aired a prank caller yesterday during their coverage of Malaysia Airlines flight 17, which was shot down by pro-Russian militants in the Ukraine, killing all 298 people on board. Krystal Ball is the host of a show called 'The Cycle', and she thought she was talking to a witness, described as a military expert named Staff Sergeant Michael Boyd. Instead, the guy said the plane was shot down by bad gas from Howard Stern. The funny part is that Krystal kept on with her questioning, like she hadn't heard. She asked the guy to use his military expertise and describe the missile. At which point he insulted her and hung up. And then she STILL wanted to hear from him.